| 摘要 |
Fuel cell comprising: (a) an anode; (b) a cathode; (c) a polymer electrolyte membrane placed between the anode and the cathode which comprises at least one polyolefin grafted with side chains containing proton conductive functional groups; wherein said fuel cell has: a value of cell resistance at 90 °C not higher than 0.30 ohm cm<2>, preferably comprised between 0.2 ohm cm<2> and 0.25 ohm cm<2>, more preferably comprised between 0.05 ohm cm<2> and 0.20 ohm cm<2>; a value of cell resistance at 20 °C differing from the value of cell resistance at 90 °C of an amount not higher than 90%, preferably not higher than 70%, more preferably not higher than 50%, with respect to the value of cell resistance at 90 °C. Preferably, said fuel cell is a direct methanol fuel cell (DMFC). |
